# SDR SWAA2026051189402

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 14, 2026
- Submitted: May 11, 2026
- Operation: Air carrier
- Aircraft: [N8639B](https://openairdocs.org/aircraft/N8639B), registered now
- Make and model: Boeing 737-8H4
- Registry model: [Boeing 737-8H4](https://openairdocs.org/model/boeing-737-8h4) (OpenAirDocs)
- Aircraft serial: 60086
- Aircraft time: 39,504 hours, 19,287 cycles
- System (JASC): [5315 · Fuselage Main, Floor Beam](https://openairdocs.org/jasc/5315)
- Part: Floorbeam
- Condition: Corroded
- Location: Zone 200
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2026051189402

## Discrepancy

CORROSION ON BS 986.5 FLOORBEAM UPPER FLANGE AT NUTPLATE HOLE RBL43; WL208.   REPAIRED BS 986.5 FLOORBEAM UPPER FLANGE IAW SRM 53-70-51-2R-6. REPAIR 6.

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